Improvement in piston-packing springs



J. SADLER.

Piston-Packing Springs. Nb. 213,942. Patented April 1, 1879.

".FETERS, PHOTO LITHOGRAPHER. WASHINGTON D C UNITED STATES PATENTOFFICE.

JAMES SADLER, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF HIS RIGHT TOCHARLES I. FANNING, OF SAME PLACE.

IMPROVEMENT IN PlSTON-PACK lNG SPRINGS.

Specification forming part of Letters Patent N 0. 213,942, dated April1, 1879; application filed January 20, 1879.

To all whom it may concern:

Be it known that I, JAMES SADLER, of the city of New York, and in thecounty of New York and State of New York, have invented new and usefulImprovements in Springs for Packing Piston-Rings; and I do herebydeclare that the following is a clear and exact description of the same,reference being had to the accompanying drawings, forming apart of thisspecification.

The object of my invention is to provide springs for the packin g-rin gof a piston. These springs can be cheaply manufactured, easily applied,and are simple in construction, being formed of one piece of steel.

My invention consists in taking a piece of steel twelve inches, more orless, in length and two inches, more or less, in width, one half ofwhich is formed into a curved shape. The other half is bent over thefirst half and is likewise curved; but the curved or arched portion isabout one-eighth of an inch, more or less, distant from the curved orarched portion of the lower half, to allow for compression. The free endof the upper half simply rests upon the free end of the lower half.

In order to more fully describe my invention, I refer to theaccompanying drawings, of which- Figure 1 is a sectional view of apiston embodying my invention, and also of the cylinder. Fig. 2 is adetached enlarged side view of the spring. Fig. 3 is a bottom view ofthe spring.

A represents a piston, with piston-rod B, placed within the cylinder 0.a is the pistonpacking ring. D D are the springs for forcing the ring aoutward against the cylinder. These springs are made of one piece ofsteel, consisting of upper part, 01, and lower part, d. (See Fig. 2.)The lower part, d is curved, as shown. At point 01 the lower part, at,is bent upward and over the part d, and curved. as shown. The curvedportion of the upper half is less than the curved portion of the lowerhalf, 61. This is done in order to allow the parts d d to be compressedor expanded when the spring is placed against the rings, as shown, inorder to force and hold the said rings close up against the inner wallsof the cylinder.

The springs can be held to the piston in any suitable manner.

Having thus described my invention, 1 desire to claim In combinationwith a piston-ring, the springs D, having upper part, d, and lower part,07'. arched and arranged as shown, and formed of one piece of steel,substantially as and for the purpose set fort-h.

This specification signed this 26th day of December, 1878.

JAMES SADLER.

Witnesses F. BoKKITT,

CH. BIEGELMAN.

